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    science
    Grade-7
    Easy

    Question

    A light ray gets refracted from multiple transparent mediums with different refractive indices and, lastly, emerges out to the first medium. The incident ray is ____ the emergent ray.

    1. Parallel to
    2. Perpendicular to
    3. Along the same line as that of
    4. Coincident to

    Hint:

    Parallel

    The correct answer is: Parallel to

      • The emergent ray become parallel to incident ray after traveling through different media, because both of them travel in same medium of same refractive index.
      • So, the correct option is a.

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